//
//  Tiger.h
//  KVO
//
//  Created by apple on 15/9/3.
//  Copyright (c) 2015年 戴维营. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Ball.h"

@interface Tiger : NSObject
{
@private
    int _age;
}
@property (nonatomic ,copy) NSString *name;
@property (nonatomic ,strong) Ball *ball;
@property (nonatomic ,assign) float weight;

+(instancetype)tigerWithName:(NSString *)name weight:(float)weight;



@end
